Water or steam boiler



Aug 10, 1937. G. A. TICHBURNE 2,089,450

WATER 0R STEAM'VBOILER Filed sept. 12, 1933 o o o o o o o o o o o ooo ooooooooqo o o o o o o o o o oo o hyveqi-or G.A.Tic baume N l7 3 Sheets-Sheet l Aug, l0, M3?, e. A. Tlcl-IBOURNE WATER OR STEAM BOILER Filed Sept. 12, 1933 goooo oooo oooo oooo N oooooooooo s oooO ooO 3 Sheets-Sheet 2 lr/verli'or G. A. TICHBQURNE 2,089,450

WATER OR' STEAM BOILER Aug. v10, 1937,

- Filed sept. 12,l 1953 u 5 sheets-sheet 5 Patented Aug. 10, 1937 PATENT `OFFICE vvA'rrR` on STEAM comin George Arrichbourne, Port Arthur, ontario, 1.. Canada Applicatiqn Vsepmnuber 12, 1933, seria1N0.6s9,154

v 1 Claim. The invention relates to. improvements in low pressure water boilers and av general object of the invention is to provide a boiler having a relatively large water containing area exposed to theheat generated by the re in the boilerand to obtain such areawithout unduly increasing the size of theboiler so thatit .will be cumber.- some and unwieldy to install. l f

`Afurther object of the invention is to'fprovide a boiler wherein the combustion chamber and the repot are entirely water ljacketed and a water jacketed smoke passage4 leads from the combustion chamber to the smokeoutletfromfthe furnace.

`A"still further object is to .provide a boiler having the last mentioned feature and wherein the water jacketed smoke passage is of a U shape so that they hotfpr'oducts of'combustion leaving the combustion chamber are given a relatively long travel before they leave the boiler in order that they may give up their heat to the water in the Walls of the passage.

A further object of the invention isto provide a boiler having a waterv jacketed combustion chamber and re pot and a relatively long water jacketed smoke passage communicating .with the combustion chamber and water heating tubes located in both the combustionv chamber and the smoke passage .and in communication withthe water inthe jackets. A further object is to provide .ajboiler formed from upstanding sections 'vi/hich can berieadily butted and bolted together, the sections being'so Water jacketed that they provide when connected a water jacketed fire pot and combustion chamber and a water jacketedrelatively long smoke pas sage leading from the combustion chamber.

A still further `object is te provide the several water jacketed sections .eachjwith exposed water tubes connected with the jackets and contained inthe combustion chamber vand thev smokepase sage when the sections areasserribled.. With the above more important andother minor objects in view whichfwill .become more apparent as the descriptionproceedthe inventionV consists essentially in the` arrangement and construction of parts hereinafterjmo're particularly described, reference being hadto the ace companying drawings,l in whi L Fig.. 1 is a side view of the urny oe.' v 1 Fig. 2 is a plan View of the, v rnacel Fig, 3` is a rear end view .ofthe'furnaceq v HFig. 4 is a horizontal; sectionaly view atfafl Fgurel; I f lig'.'5 is a vertical cross sectionalview at 5&5 Figure 2. K.

Fig.v 6 isV a vertical' VIseetional view at 6 6 Figure 5.

Fig. 7 is a horizontal, sectional view showing a modification embodying three sections` In the drawings like characters of reference indicate corresponding parts in the several gures. The base I of the furnace is preferably made from cast iron and contains the ash pit 2 which is approached through the ash door 3 located at one end of the base. A suitable damper 4 is provided at the front of the base which can be opened or closed for draftpurposes. supports in the usual manner the ends of the grate bars 5, these overlying the ash pit and being pivotally mounted at their ends so that they can be shaken when desired. The grate bars yare supplied with downwardly extending arms 6 and a number of the rear arms are connected pivotally in the usual way to a forwardly extending shaker bar 'I connected to a forward lever 8 at the front of the furnace.

The base A number of the front arms are similarly connected to a shaker bar 9 which has its front end attached to a lever I.

The arrangement is such that when the lever 8 is operated forwardly and back, the rear grate' bars are shaken and when the lever IU is operated forwardly and back, the forward grate bars are shaken. I have not given a detailed description of the latter grate bars as they are well known to those familiar with the art.

[On thebase I mount the body I| of the furnace which is somewhat narrower in width than the base and has a rear portion extending rearwardly beyond the base and supported by suitable legs I2. In the principal views of the drawings, I have shown the body of the furnace as formed from two similar left and right upstanding sections I3 and I4 having their inner sides butted together and provided in suitable locations with mating lugs I5 whereby the sections can be firmly fastened together by bolts I6. As the sections are identically constructed, the description of one will suffice.v

Each section is preferably made from boiler plates suitably shaped to supply the parts required and welded together to provide water tight joints. Actually each section presents a water jacketed outer wall I1, water jacketed front and rear walls I8 and I9, a water jacketed top 2U, two rearwardly disposed and spaced Water legs 2| and 22, a further water leg 23 positioned more or less centrally above the grates and a bottom leg 24| connecting the lower end of the leg 2| with the water jacket of the rear wall.

It will be observed that the outer ends of the legs 2|, 22, 23 and 24 communicate directly with the water jacket of the outer wall 1 and that the upper end of the legV 22 communicates directly with the water jacket of the top and further that the latter leg takes an intermediate position between the leg 2| and the rear Wall I9 and has the lower end thereof spaced from the underlying leg 2d and that the leg 2l lies immediately to the rear of the base and actually forms the rear wall of the re pot 25 and combustion chamber 26.

When the two sections are placed in position and bolted together, the ends I8 and I9 of the sections butt as do also the inner face of the legs 2l, 22, 23 and 24 and there is no inter-communication between the sections, of they water in their 10 respective walls or legs.

The rear walls of the sections are provided with smoke outlet passages 2l and 28 which pass through the rear walls and the side wall of the section I@ is tted with a re door 29 opening to the combustion chamber and with a clinker door 35 opening to the lower part of the re pot in a location directly above the grates.

Thetop of each section is provided with a Water outlet passage 3l and the passages communicate with aheader 32 from which a common service pipe 33 passes. The outlets 21 and 28 are connected. by a smoke pipe 3d and a smoke pipe 35 leads from the pipe 34 to the usual chimney flue. Each of the sections is also provided rearwardly at the top with an inlet pipe 35 opening to the water jackets and the inlet pipes are connected by a header 3l with which a water return pipe 38 communicates.

In the rear water jacket of each section, I

30 form a vertical partition 39 which crosses the jacket and divides such jacket so that the incoming water has to flow first downwardly within the jacket.

When the two sections have been put in place', it Will be seen that the butting legs 23 centrally divide the fire pot so that either half or all the fire pot can be used for firing purposes as desired and that either `half of the grate can be shaken by manipulating one or other of the levers 4.0 8 or B.' It will be also seen that the combustion chamber communicates over the top of the legs 2l with a U-shaped smoke passage 4I) formed at the rear end of the furnace and communicating' with the smoke outlets 21 and 28 and that the wallsof this U-shaped smoke passage are entirely water jacketed with the result that the heat of the passing products of combustion is utilized to advantage in heating the water in the walls of the passage.

Further it will be noticed that both the combustion chamber and the re pot are enclosed within water jacketed walls and that the fire pot is divided by water jacketed legs.

In each section of the furnace, I locate three sets of water tubes 4l, 42 and i3 respectively, the tubes 4l crossing the combustion chamber and connecting the upper part of the leg 2l with the water jacketed front wall I8, the tubes 42 passing across the upper part of the combustion ,60 chamber and down the smoke passage 4I! and .connecting the front part of the leg 2li with the water jacketed wall I8 and the tubes 43 extending downwardly within the rear part of the smoke passage dii and connecting the rear part of the ,65 leg 24 with the upper part of the Water leg the tubes in the passage will also be heated by the passing products of combustion. Suitable clean out doors 44 are provided so convenient access can be had to the bend in the passage 40 for cleaning, inspection or repair purposes.

A furnace constructed as described utilizes a maximum amount of heat created by the fire for water heating purposes due to the relatively large Water heating exposure area provided and the various major parts are so arranged that they can be conveniently handled and installed and if necessary the sections can be readily taken apart for repair purposes. Further and as already mentioned, a re can be built over the entire y.grate area or either half of the grate can be used when only a relatively small fire is required.

If it is desired to have a larger furnace, that is, one embodying more than two sections, such can be readily done by introducing one or more somee what similar sections between the sections already described. In Figure 7, I have shown a furnace having the body thereof formed from three sections and in such a case, the base is made larger to accommodate the three sections. The side sections are made the same as those already described and the central section 45 is identical to the side sections with the exception that it has no water jacket corresponding to that shown at I'I and no leg corresponding to that shown at 23. It will of course be understood that the centre section is supplied with the tubes the same as the side sections.A

By so making the centre section, it is possible to add any number of sections 45 as they are simply put in place side by side between the sections I3 and I4 and then bolted together by the i outlets are connected to the pipe 34, it being understood of course at such time the pipes 32, 3l and 34 will be somewhat longer in order to accommodate the yinserted section or sections.

In the principal views of the drawings, I have shown the leg 23k adjacent the ring door with the top thereof terminating approximately at the level of the ledge of the doorway opening and the corresponding leg of the section remote from the door as rising well up within the combustion chamber. This arrangement is resorted to so that there will be no interference with the firing of coal or fuel at the door.

What I claim as my invention is:-

A water boiler comprising a furnace body having water jacketed walls, vertical water legs crossing the rear part of the body and communicating with the water jacket the lrst of said water legs extending from the bottom of the furnace but stopping short of the top, and the second water leg extending from the top but stopping short of the bottom so as to form a water jacketed U-shaped smoke outlet passage between said water legs leading from vthe forepart of the body, horizontally disposed water heating tubes located in the upper forepart of the body, said water heating tubes being bent at right angles and extending vertically within the U-shaped smoke outlet passage,'all of said tubes being in communication with the water in the jacket and the legs.

GEORGE A. TICI-IBOURNE. 

